Delphi

Embarcadero Delphi is an integrated development environment for Microsoft Windows applications originally developed by Borland and now owned and developed by Embarcadero Technologies. It is based on the Delphi Programming Language, which itself is a derivative of Object Pascal.

dbExpress. It is Embarcadero's data driver architecture that replaced the older Borland Database Engine. dbExpress is the recommended Oracle Database connectivity for Delphi, included into RAD Studio Enterprise and Architect editions.

dbGo. It is set of VCL components and classes built around Microsoft ADO.

AnyDAC from DA-SOFT Technologies. AnyDAC is a commercial high-speed data access сomponent library for Oracle and other DBMS that simplifies the task of building Delphi, C++Builder and Lazarus database applications.

DOA from Allround Automations. DOA is a commercial set of Oracle data access VCL components for Delphi and C++Builder.